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New Sorption and Combined Sorption-Membrane Technologies for Water Purification and Fresh Water

Preparing


Joint Stock Company, Scientific and Technical Enterprise “Radiy” , Moscow, Russia

In collaboration with:

V. I. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow

Scientifical and Technologial Company "New Chemistry", Ltd

Chasovaya ul.,28, 125057, Moscow, Russia Tel. +7(495)151-15-21,

Fax. +7(495)152-69-14

Ralph T. Niemeyer, Director Int’l. Dept.

E-mail: [email protected]


1. Technological experience in the field of water and wastewater treatment

2. New sorption materials and technologies for water treatment.

3. Combined sorption-membrane processes

4. Actual Examples for Collaboration

OUTLINE


1. Technological experience in the field of water and wastewater treatment


MOBILE PLANTS “WATERFALL” OF CONTAINER TYPE

Sorption and Filtration

More than 30 units are now in operation in remote regions

of Russia


The units of different scales for HIGH QUALITY WATER PREPARING FROM SALINE

WATERS Reverse Osmosis


PILOT PLANT FOR SEAWATER PROCESSING

RUSSIA,

Okhotskoe Sea

5 m3/h

K, Rb, Sr, Li, U

Khamizov R, Muraviev D, Warshawsky A, Recovery of Valuable Mineral Components from Seawater, Ion Exchange and Solvent Extraction. A Series of Advances, Marcel -Dekker, Inc., New York, 1996, P.93-148


A pilot unit for seawater waste-free processing through “Zero-Discharge” technology.

Was awarded the Gold Medal at the exhibition in Brussels Eureka

Was demonstrated in operation at the exhibition WETECh –2008 (Dubai) and tested in long-term operation at real desalination plant (Ajman, UAE)

Now the first industrial plant is under construction in UAE (Dubai Silicon Valley)

Water and Minerals from Sea


2.New sorption materials and technologies for water treatment

Natural sorption materials and chemically modified natural materials and nanomaterials:

alumosilicates (zeolites), magnesium and iron silicates (serpentinites)


Natural sorption nano-materials Serpentine minerals

(Mg,Fe)6[Si4O10](OH)6 с примесями Fe3O4, Cr2O3, NiO, MnO, CoO, СаО, Al2O3

Основа - (MgOH)2SiO3

Elementery fibers of serpentine are hollow inside. Inside diamiter equals 13nm and the outide 26nm (Дж.Е.Джирард, Основы химии окружающей среды, М.»Физматлит»,2008, 640 с.)


Scanning the serpentinite surface (specially prepared ) with Atomic Force Microscope

11

Scan area: horizontal - 160 x 160 nm;

vertical - 10 nm;

black - "depression“;

white - "top“.


Activated serpentinites

New Sorption Materials «SKOV»Patent of Russian Federation: 2316479. European Patent Application (WiPO) : WO/2007/111531

Based on: natural hydrocilicate magnisian.

«Radiy» holds a mining licence for 50million tuns of the mineral.

Worlds best known matirial for removing metal.

Similtniasly cleans water from metal, manganese, color and heavy matels, arsenics, fluorine and bromine, and clear up the water. Independent test have been carried out in diferent countries

Possesses by bactericidal properties


Мутность (Turbidity)

ppm (mg/l)

2.0 3.17 0.33 0.53 0.89

Железо (Iron) ppm 0.3 0.49 0.12 0.14 0.12

Марганец (Mangenese)

ppm 0.1 0.23 0.03 0.06 0.04

Фтор (Fluorine) ppm 1.2 1.66 0.45 0.67 0.39

Бор (Boron) ppm 0.5 0.68 0.11 0.18 0.14

Цинк (Zinc) ppm 3.0 0.86 0.09 0.23 0.15

Медь (Copper) ppm 1.0 0.65 0.06 0.13 0.09

Свинец (Lead) ppm 0.03 0.02 <0.01 <0.01 <0.01

Characteris-tics

Units Require-ments

Initial Water

SКОV-1 SКОV-2 SКОV-3

Results of independent tests


Removal of iron from brackish well water in cyclic processes: sorption-back washing.

Initial Fe -content: 6.1 mg/l, TDS=4.9 g/l (Total mineralization). Sorption material - granulated SKOV, 1-1.5 mm of grain sizesColumn bed: L = 350 mm, S= 2950 mm2 , BV = 1 liter.

Independent tests performed by the "ECOSOFT" JSC, Kiev, Ukraine

Flow rate,bed

volumes per hour

(BV/h)

(BV) Bed

Volumes of purified water

Fe-content in a filtrate,

mg/l

рН

10 50 0.026 8.02

10 100 0.092 7.72

10 200 0.053 7.37

20 300 0.416 7.24

20 400 0.405 7.16

20 500 0.410 7.24

10 550 0.057 7.31

10 600 0.082 7.18

The sensitivity of the purification process to flow rate was checked. During the continuous passing initial water trough the sorption bed, the flow rate was kept 10 l/h, then, elevated two times, up to 20 l/h, and then, reduced back.


Decontamination of drinking water from arsenicsMounting spring water fro the North Caucasus regionInitial As -content: 0.064 mg/l (64 g/l), TDS=0.43 g/l .

Flow rate,bed volumes per

hour (BV/h)

(BV) Bed Volumes of

purified water

As-content in a filtrate, g/l

10 500 (5 liters) 27.0

10 5 000 12.0

10 10 000 0.0

10 15 000 0.0

10 20 000 0.0

10 25 000 0.0

10 30 000 2.0

10 35 500 6.0

10 40 000 14.0


ARSENICS PROBLEM IN THE WORLD

WHO's activities on arsenic

In 1963 the standard was estimated to be 0.05 mg/L. In 1984, this was maintained as WHO's "Guideline Value"; and many countries have kept this as the

national standard or as an interim target.

According to the last edition of the WHO Guidelines for Drinking-Water Quality (1993):

Inorganic arsenic is a documented human carcinogen.

0.01 mg/L was established as a provisional guideline value for arsenic.

Based on health criteria, the guideline value for arsenic in drinking-water would be less than

0.01mg/L.

Natural arsenic pollution is a global phenomenon for 70 countries on all continents, except Antarctica,. In recent decades about 140 million people worldwide have been exposed to drinking water containing more than 10 μg/L of arsenic.”


a tipical machine with an aoutput of 240tuns in 24h for a chidrens summer camp in moscow region.

Plants of different sizes for producing highly qualitative drinking water from contaminated undeground sources

Plants for local water provision (Country houses, Cottages) и дач. Pроизводство в НПП «Радий» c 2009 г.


INDUSTRIAL SCALE UNIT FOR WATER PURIFICATION 2000 м3/day (from underground water enriched with iron, fluoride and boron)


3. Combined sorption-membrane processes


Illustration of the Main Idea by an Actual Example

Argentina, Underground water


The component contents should be reduced:- Total Dissolved Salts (TDS) – in 1.4 times;- sulphates - in 2.5 times- fluorides – in 1,2 times- arsenic – in 10 times

Standard technology, for example with the use of Reverse Osmosis (RO) with the productivity of 1 conventional unit

Pretreatment RO

Relation of flow rates (9 : 1) is chosen referring to the main (10-times) contaminator - As

Initial flow flow rate =1.00

By-pass flow rate = 0.11

Pure water

1.1 units


The component contents should be reduced:- Total Dissolved Salts (TDS) – in 1.4 times;- sulphates - in 2.5 times- fluorides – in 1,2 times- arsenic – in 10 times

The distinction of our technology, also with the use of Reverse Osmosis (RO) with the productivity equal 1 unit, is in using SKOV for pretreatment for disironing andfor removal arsenic.

SCOV RO

Relation of flow rates (1.3 : 1) is chosen referring to minor (2.5-times) contaminator – Sulphates.`The productivity grows extremely.

Initial flow Flow rate =1.00

Bypass flow rate = 0.65

Pure water,

1.65 units


Demonstration pilot plant consisting of two modules for combined sorption-membrane technology

Sorption module Membrane module


Technological flow chart for sorption upgrading module (for 65%) the existing standard RO plant


4. Actual Examples For Collaboration


Acid mine water rising beneath the surface of South Africa's Witwatersrand area (300 ML\Day)

Basin - the area into which water polluted by acid mine drainage (AMD) will flow naturally. The Witwatersrand Mining Basin covers an area of 1600 km2 (see map below).

Mine water being pumped from the Eastern Basin


Chemical composition of acid mine drainages (mg/l)

Sulphate 1910 Chloride 44.5

Sodium 46.5 Magnesium 124.6

Calcium 157 Manganese 63.7

Iron(II) 228 Aluminium 3

Zinc 3.2 Nickel 5.6

Cobalt 2.1 Copper 21.0

Lead 0.03 Uranium 0.47

Total dissolved Solids 2641, pH 3.3

A Simple Example of CompositionpH: from 2.7 to 3.5

TDS: from thousands ppm to tens of thousand ppm

Uranium content: from 0.4 to 15 ppm


Pilot Plant for Treatment of Mine Waters and Radio-Active Waste Waters. Was Successfully Tested in ULBA Uranium Metallurgic Factory (Kazakhstan) at Natural Field Conditions.

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Sorption module (One of the columns is loaded with Serpentinite (alkali rock material)

Membrane module (Reverse Osmosis and Electro-dialysis)


Composition of Waste Waters of Uranium Metallurgic Factory (Kazakhstan)

Near Zero-Discharge technology was Elaborated which can be used for AMD from South Africa


River Water

Iron (Fe) – 6 times exceeding

Turbidity and Color should be also reduced

Sorption technology with SKOV can be applied


House Keeping Water

Nitrates (NO3) – 1.5 times exceeding

Silica – 2 times exceeding

Turbidity and Color should be also reduced

Sorption-Membrane technology with SKOV and RO can be applied


Thank you very much for kind attention

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