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Published by Andries Maree, 2018-12-12 02:10:32

NJF WASTEWATER TREATMENT

NJF WASTEWATER TREATMENT

ENERGY EFFICIENT DECENTRALISED
WASTEWATER TREATMENT & RECYCLING

SYSTEMS

“Water is Life. Sanitation is Dignity”

DIRECTORS: HJ FOURIE H ROOS

“A robust, modular micro wastewater treatment
system that can receive, treat and recycle
domestic black and grey wastewater with very
low energy and maintenance requirements.”

The NJF Wastewater Treatment & Recycling System (NWTRS) combines a raft of
game-changing technologies proudly developed in South Africa by a South African
company:

➡ Treat domestic black and grey effluent to international standards for discharge into
rivers, utilise for irrigation, livestock, or recycled back to the toilets

➡ Low maintenance with sludge removal only required once every 2 years
➡ Low energy usage with option to operate completely energy independent through

PV solar system with back-up batteries
➡ No offensive odours from treatment plant due to effective sulphur consuming

bacteria
➡ Solar-powered Security Lighting
➡ Option to upgrade treated water to potable standard
➡ Additional option for build-in Pay-per-Unit system

for potable water to reduce wastage and recover
operational costs
➡ Robust and secure to endure harsh climates
➡ Leakproof – all treatment compartments lined with
10mm thick rubber to make containers completely
water tight.
➡ Modular to allow for easy expansion
➡ Mobile to allow for easy placement, installation,
connection and relocation
➡ Designed for deployment in peri-urban areas,
remote game lodges, disaster relief areas, etc.

DIRECTORS: HJ FOURIE H ROOS

The NWTRS is the product of the experience and collaboration of passionate
companies and individuals working in the water treatment industry globally,
especially focused on Africa. The NWTRS is unique and have characteristics that
sets it apart from any other product available globally.
The system is modular and can be combined in various ways to suit the client’s
needs and budget. Elements can also be added (or removed and relocated) as the
need arises.
The system contains various modular components:

DIRECTORS: HJ FOURIE H ROOS

The primary building block of the NWTRS is the Biological Wastewater Treatment Unit
with an unique blend of 19 bacterium strains, developed and cultivated in-house.
This specific blend of bacteria digests the various small organic carbon molecules and
so removes impurities from the wastewater

BWTU Standard Layout

The wastewater is treated to international standards for discharge and can be
utilised in a number of ways:

➡ Recycled back to our ablution units for the flushing of toilets
➡ Discharged into rivers, stored in retention ponds for use as irrigation,

feeding life-stock and any other non-potable use.

DIRECTORS: HJ FOURIE H ROOS

The process consists of 5 Phases:

Intake works, screens and clarifiers where all inorganic and undesirable matter
are removed.
The anaerobic treatment processes take place in the absence of air by those
micro-organisms (also called anaerobes) which do not require air
(molecular/free oxygen) to assimilate organic impurities.
Aerobic treatment processes, take place in the presence of air and utilise
those microorganisms (also called aerobes), which use molecular/free oxygen
to assimilate organic impurities i.e. convert them in to carbon dioxide, water
and biomass.
Clarification and anoxic treatment – biomass that accumulates is recycled to
the anaerobic zone where sludge reduction occurs through re-activated
sludge treatment.
Disinfection – final water is disinfected using ozone or chlorine from where
the water is discharged, recycled as treated water or further treated by RO
unit to potable standard

DIRECTORS: HJ FOURIE H ROOS

➡ Housed in a standard High Cube 40-foot ISO shipping container - Cost effective
transportation.

➡ Standard module can treat up to 10,000 l /day, equivalent to +/- 1,600 toilet visits per
day, serving a community of between 400 to 800 people.

➡ Final effluent contains no chemicals and is within legislative discharge requirements for
discharge into the environment or for non-potable recycling.

➡ Modular and can easily be expanded by additional containers or moved to other sites.
➡ No daily sludge generation, sludge to be removed once in 2 years
➡ Low electricity consumption, operating and maintenance cost
➡ Complete system is constructed and tested before installation.
➡ Very easy installation – self levelling steel footings. No excavation or concrete slabs

required. Contour issues on site are eliminated.
➡ Theft reduced due to lockable doors and limited access and all electrical and

mechanical components are out of sight - Limited pipework needed
➡ The system life expectancy is 8 to 12 years, depending on container maintenance.
➡ Minimal footprint and reduced land requirement

DIRECTORS: HJ FOURIE H ROOS

Our male and female Ablution Boxes are aimed and specifically designed for areas
with stressed water supply and are ideal for:

➡ Informal settlements
➡ Peri-urban areas
➡ Schools
➡ Mining camps
➡ Game lodges
➡ Disaster relief

Each Ablution Box is housed in a standard 40-foot high cube shipping container.
The units are extremely robust and include:

➡ 9 (Female) or 7 (Male) Low-flush WC’s in cubicles
➡ 4 Urinals (Male only)
➡ 5 Basins with taps governed to 1 litre per use
➡ Openable windows in each cubicle plus 6 additional windows
➡ Secure operations area with lifting station, screens and separate entrance
➡ Pre-fitted couplings for easy connection to BWTU
➡ Connection point to recycle treated effluent back to WC’s if required
➡ Connection point to recycle potable water back to basins if required

DIRECTORS: HJ FOURIE H ROOS

A portion of the treated effluent for recycling or discharge can be further treated to
potable standard. The units are installed in an allocated compartment in the BWTU.
The micro RO Unit has the following features:

➡ Produces between 500 to 1,000 litres per
hour (12 to 24 m3/day)

➡ Capable of treating all the final effluent
from the BWTU to potable standard

➡ Water can be recycled back to the
Ablution Box taps, or to a dedicated
distribution point

➡ Flow for the Distribution Point can be
controlled by a Pay as you Go keypad,
dispersing water in measured units
based on code purchase.

DIRECTORS: HJ FOURIE H ROOS

The containerized 10 kW PV array with a 4 kW 3-Phase Inverter and 48 V battery
system, is designed as Power Management mechanism to provide continuous
electricity to set loads in remote or off-grid sites.
Our systems are setup with an unique built-in Power Management system. It uses a
power meter to actively manage how the power produced by the PV panels is
supplied to the loads or stored for off peak loads.
The entire system, including Framing and PV panels inverters, batteries, cabling and
power accessories, fits into a 20-foot container.
The system has a web-based monitoring capacity that can be managed and viewed
online through our dedicated portal.

INVERTORS & STORAGE BATTERIES

ROOF PV SOLAR ARRAYS

DIRECTORS: HJ FOURIE H ROOS

The modular system can be further enhanced be adding steel screens or dividing
walls, doors and roof to create a secure back area for maintenance, storage of spare
parts, solar batteries and inverters, etc.

➡ Single, lockable access point to operational and maintenance area.
➡ Creates covered, secure working space for maintenance, storage, etc.
➡ Screens and roof are cut from refurbished shipping containers to match

rest of unit in both robustness and aesthetics.
➡ Adjustable bolted connections to allow for nominal differential floor

levels between containers.

DIRECTORS: HJ FOURIE H ROOS

Nominal maintenance is required to keep the equipment at optimal working conditions, at daily,
monthly and bi-annual frequency.
Local community members can be trained to performed the daily maintenance, while the monthly and
bi-annual maintenance shall be done by qualified personnel on a service contract agreement.

Daily Maintenance (By trained local community member)

➡ Clean inorganic built up in the screen, and clean if necessary
➡ Check that all mechanical Equipment is operational
➡ Check bacteria level in bacteria holding tank and mix bacteria

Monthly Maintenance (By NJF )

➡ Check that all mechanical Equipment is operational and that
there are sufficient bacteria in the bacteria tank

➡ Open the sludge drains of each chamber to return sludge to
screen for re-treatment

➡ Ensure that flow regulator is set to prescribed flow rate
➡ Measure and record air input volume, and adjust aeration cycles

if needed.
➡ Conduct field water tests and record the following: Dissolved

Oxygen (D/O), PH, Dissolved solids (TDS), conductivity, turbidity,
flow rate & aeration cycles

Bi-Annual Maintenance (By NJF )

➡ Sampling – take feed sample and final treated effluent sample for SANAS accredited lab analysis
➡ Manual Screen - Remove all non-organic material & agitate the accumulated organic material.
➡ Blowers – Verify that blowers are clear of obstruction and grease mechanical components where required
➡ Clarifier Pumps - Verify that the submersible pumps are clear of obstructions and in good running order.
➡ Ozone Equipment - Measure & record Ozone Generation is to design specifications
➡ Dosing Equipment - Measure & record dosing ratio & check bacteria level in bacteria holding tank and

mix bacteria.
➡ Electrical - Check timers is set to correct intervals for the clarifier pumps and test & ensure time is

accurate
➡ Report - Full independent lab analysis for discharge effluent & full fault report and corrective action

requirements to be provided.

DIRECTORS: HJ FOURIE H ROOS

The NJF Wastewater Treatment & Recycling System can be
upgraded and extended as demand increase

BWTU ONLY BWTU + 2 ABLUTION BOXES

BWTU + 2 ABLUTION BOXES + BWTU + 2 ABLUTION BOXES +
SECURITY WALLS & ROOF SECURITY WALLS & ROOF + SOLAR

2 BWTU + 4 ABLUTION BOXES + SECURITY
WALLS & ROOF

DIRECTORS: HJ FOURIE H ROOS

The Department of Water and Sanitation’s National Sanitation Policy 2016, stipulates the
following guidelines for the improvement of sanitation service delivery in South Africa:

The right of access to basic sanitation

➡ A basic NWTRS can be installed for every cluster of 400 – 800 people
➡ If there is no electricity – a solar module can be provided to run the system off-grid
➡ Can be placed on nearly any terrain - no excavation required, levelling steel plate footings

Prioritising hygiene and end-user education in sanitation service provision

➡ The NWTRS provides hygienic flush toilets, basins with controlled access to water and soap
through dispenser for hand washing

Prioritising basic sanitation services to vulnerable people and unserved households

➡ The NWTRS was specifically designed for informal settlements, schools, care facilities and
other vulnerable communities

People-centred and demand-driven sanitation service provision

➡ Maintenance of facility is transferred to local representatives through training and
employment contract

➡ Facility can be easily upgraded, downgraded or relocated

User pays principle

➡ Option to include water purchase through Pay-As-You-Go system
➡ This provides water but prevents wastage

Sanitation has economic value

➡ The GTWRS is a tangible asset that can be upgraded, relocated and re-used.

Equitable regional allocation of development resources

➡ Low CAPEX and modular nature of the GTWRS allows for huge flexibility in project scope
➡ Cost of GTWRS is not site specific so allows for concrete budget figures

Prioritising operation and maintenance

➡ cycle operations and maintenance requirements and costs are clearly defined
➡ GTWRS are highly modular, allowing relevant parts to be replaced without having to replace

the whole system

DIRECTORS: HJ FOURIE H ROOS

NJF Mining Consultants
54 Duncan Street
Extention 10
Witbank
South Africa
1035

Postnet Suite 399
Private Bag X7297
Witbank
1035

Hein: (+27) 83 656 1405
Hannes: (+27) 72 320 3651
Kobus: (+27)

Email: [email protected]

DIRECTORS: HJ FOURIE H ROOS


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