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Brackish Water Reverse Osmosis – Basic

MAK Water’s Brackish Water Reverse Osmosis – Basic (BWROB) plants are pre-engineered products, designed to suit simple applications where a high level of electrical instrumentation and controls is not required, and the feed water quality falls within the parameters defined in the data sheet.

The standard treatment process involves pre-filtration (5 and 1 micron cartridge filters) and RO desalination. The BWROB is designed to operate continuously until the permeate tank is filled, or feed water is unavailable.

The BWROB is available with a pre-determined number of standard options and is supplied with a generic documentation package.

Technical Specifications

Standard Specifications

Parameter	Units	BWROB-010	BWROB-015	BWROB-025	BWROB-030	BWROB-035	BWROB-050
Permeate flow rate	m³/day	10	15	25	30	35	50
Permeate recovery rate	%	40~70 (varies according to feed water quality and RO configuration)
Ambient design temperature	°C	1~35 (1~43 with optional air conditioned container)
Feed water inlet pressure	kPa	min. 200~500 max. (flooded suction only with optional low pressure feed pump)
Permeate discharge pressure	kPa	~40
Brine discharge pressure	kPa	~40
Power supply	-	AC 240V, 1 Phase, 50Hz
Power consumption (approx.)	kW	2	2	2	3	3	5
Control panel IP rating	-	IP50
Skid dimensions (approx.)	mm	1,500W x 1,700H x 680D
Skid weight (approx.)	kg	150	160	170	180	190	200
Container size (optional)	-	10’ ISO
UV disinfection (optional)	UV dose	>40 mJ/cm² @ 90% UVT
Distribution pump set (optional)	m³/hr @ 300kPa	1.04	1.56	2.6	3.13	3.65	5.21

Parameter	Units	Feed water	Permeate
Total dissolved solids (TDS)	mg/L	<3,000	<500 (typical)
Temperature	˚C	15~30	-
pH	pH units	5~8.5	-
Total suspended solids (TSS)	mg/L	<5	<1
Particle size	µm	>1	-
Silt density index	-	<5*¹	-
Free chlorine	mg/L	0 (<2 with optional GAC filter)	0 (0.2~2.0 with optional chlorine disinfection)
Dissolved iron	mg/L	<0.1	-
Dissolved manganese	mg/L	<0.1	-
Biological oxygen demand (BOD) as O₂	mg/L	<10	-
Chemical oxygen demand (COD) as O₂	mg/L	<10	-
Total organic carbon (TOC)	mg/L	<3	-

*¹Increased membrane fouling will occur where feed water SDI exceeds 3

Standard Inclusions and Options

Equipment		BWROB-010	BWROB-015	BWROB-025	BWROB-030	BWROB-035	BWROB-050
Skid mounted plant		✓	✓	✓	✓	✓	✓
uPVC pipe work with isolation, non-return and sampling valves		✓	✓	✓	✓	✓	✓
Inlet pressure regulating valve*¹		✓	✓	✓	✓	✓	✓
Solenoid valves (inlet feed and CIP/flush)		✓	✓	✓	✓	✓	✓
Low pressure feed pump		o	o	o	o	o	o
High pressure RO pump		✓	✓	✓	✓	✓	✓
RO pressure vessels and membranes with reject control valve		✓	✓	✓	✓	✓	✓
Concentrate recirculation with throttling valve		✓	✓	✓	✓	✓	✓
Hose connections for membrane clean in place (CIP)*²		✓	✓	✓	✓	✓	✓
Control panel with indicator lamps, isolators and e-stop		✓	✓	✓	✓	✓	✓
Pre-RO treatment	Cartridge filters (5 and 1 µm)	✓	✓	✓	✓	✓	✓
	Auto-backwashing GAC filter*³	o	o	o	o	o	o
	Anti-scalant dosing*⁴	o	o	o	o	o	o
Post-RO treatment	Flow paced chlorine dosing	o	o	o	o	o	o
Post-RO treatment	UV reactor with ballast*^{5, 6}	o	o	o	o	o	o
Containerised system with overhead lighting and air conditioning		o	o	o	o	o	o
Permeate distribution pump with controller*⁵		o	o	o	o	o	o

*¹Not supplied where low-pressure feed pump option is taken, *²CIP tank and pump by others, *³For free chlorine removal, *⁴May be required depending on feed water quality, consult MAK Water, *⁵Separate power connection required, *⁶UV system supplied loose for installation by others

Instrumentation		Included
Level switches	Feed water tank	✓
	Permeate tank	✓
	Anti-scalant dosing tank (optional)	✓
	Chlorine dosing tank (optional)	✓
Pressure switches	Low pressure feed pump discharge (optional)	✓
	High pressure RO pump discharge	✓
	Permeate distribution pump (optional)	✓
Pressure gauges	Feed water inlet or low pressure pump discharge (optional)	✓
	GAC filter discharge (optional)	✓
	Cartridge filter discharge	✓
	High pressure RO pump discharge	✓
	Brine discharge	✓
Flow indicators (rotameters)	Permeate	✓
	Reject	✓
	Recirculation	✓
Conductivity meter	Permeate	✓

Disclaimer: We continuously update and improve our products and services, contact us for more detailed information or to confirm specifications. MAK Water takes no responsibility for any errors resulting from the use of information contained on this website.

High Purity Water to Improve Efficiency for Manufacturing

Manufacturing

A Western Australian glass and stone manufacture was continually having issues with water marks being left on their glass sheets after they have been washed down. The company contacted MAK Water to design, construct and commission a water treatment process that treated their mains water supply to a standard that eliminated the smear marks after washing the glass sheets.

Brackish Water Reverse Osmosis – Basic

Western Australia

Demineralised Water for Defence

Infrastructure

A major defence contractor reached out to MAK Water to discuss options for demineralised water treatment. The client required low conductivity water for to top up battery water on naval vessels. Demineralised water was needed at two different locations and the client had a tight schedule to ensure continuity of service. Following a full consultative review MAK Water designed a containerised Brackish Water Reverse Osmosis – Basic (BWRO-B-010) plant that uses a MAKPAK ion exchange process to treat scheme water to below 5µs/cm conductivity. The plant was delivered on-time, in-budget and producing water well below the conductivity in the design specification. This enabled the client to top up batteries with low conductivity water reducing the risk of the batteries losing capacity and extending battery life. As a result of the success of this project MAK Water has been asked to consult with international allies to produce a similar solution for their own use.

Brackish Water Reverse Osmosis – Basic

Western Australia

"The MAK Water team were professional, knowledgeable, and attentive to detail, we appreciate their excellent work and commitment to quality. "

We worked with MAK Water on the installation of a Reverse Osmosis (RO) plant, it was designed, built, installed on time and to budget. It perfectly meets the needs of our simulated workplace environment, providing a practical, high-quality learning resource.

A/Director - Science, Resources and Environment

North Metropolitan TAFE, Perth

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Standard Specifications

Standard Inclusions and Options

Real-world examples

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