SU1381076A1 - Composition for cleaning waste water from suspended matter - Google Patents

Abstract

The invention relates to the field of physico-chemical treatment of industrial wastewater, in particular to wastewater treatment compositions, can be used for draining wastewater drains and flushing devices containing toxoid suspension of clay particles, and allows increasing the extent and speed of wastewater treatment. water, reduce the height of the sediment layer. To achieve this goal, the composition contains, in wt%: polyacrylamide, 0.03-0.05J, cationic polyselectrolyte, 0.01-0.03; ferric chloride (III) 0.40-0.80; ferric chloride (II) 0.06-0.10j aluminum chloride 0.40-0.80, potassium chloride 0.20-0.60; sodium chloride 0.08-0.12; calcium chloride 0.14-0.18, magnesium chloride 0.04-0.08 j water - the rest. 1 tab.

Description

from 00

05

The invention relates to the physicochemical treatment of industrial wastewater, in particular for the treatment of wastewater drag and flushing devices containing fine suspended particles of clay particles.

The purpose of the invention is to increase the degree and speed of water purification from finely dispersed suspended particles of clay and reduce the height of the sediment layer.

Example 1. (known method) In 96 ml of water (96 wt.%) Is dissolved sequentially with stirring.

polyacrylamide (PLA). The solution is thoroughly mixed, then topped up with water to 100 ml, mixed again and fed to a process for purifying water of a composition analogous to Example 1.

Example 3. To prepare 100 ml of a solution, Q metal chlorides are dissolved in a certain amount of water, g: 0.6 (0.6% by weight)

, 0.6 (0.6 wt.%) A1Cl; 0.4 (0, D wt.%) KCi; 0.16 g (0.16 wt.%) CaCl2; 0.10 g (0.10 wt.%) Nad; 0.03 (0.08 wt.%) FeClj, 0.06

20 g (20 wt.%) Potassium chloride, for-15 (0.06 wt.%) 0.02 g (0.02 wt.%) The 0.2 g (0.1 wt.%) Polyethyleneimine (PEI) and 0.10 g (0.10 wt.%) Polyacrylamide (PAA). The solution is thoroughly mixed for 2-3 minutes and served in the process.

10 ml of the prepared solution is added to 1 l of wastewater containing 10 g / l of suspended particles of clay with a size of 0.074 mm, stirred in teVPK-402 and 0.04 g (0.04 wt.%) Of PAA. The solution is thoroughly mixed, then topped up with water to 100 ml, mixed again and fed to the process for water purification of composition 20, similar to example 1.

Example 4. To prepare, 100 ml of a solution of a quantity of water are successively dissolved.

for 10–15 s and defend and determine the degree of water purification.

Example 2. To prepare 100 ml of the solution of the proposed composition, the chlorides of metals 30 h are dissolved in a quantity of water: I 0.4 (0.4 wt.%) FeCl; 0.4 (0.4% by weight) 0.2 (0.2% by weight) KCi; 0.14 g (0.14 wt.%) CaCU, 0.08 (0.08 wt.%) NaCl; 0.06 (0.04 wt.%) FeCb; 0.04 (0.04 wt.%) MgClj; 0.01 5 (0.01 wt.%) Polydimethyldialammonium chloride (VPK-402) and 0.03 (0.03 wt.%)

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polyacrylamide (PLA). The solution is thoroughly mixed, then topped up with water to 100 ml, mixed again and fed to a process for purifying water of a composition analogous to Example 1.

Example 3. To prepare 100 ml of a solution, Q metal chlorides are dissolved in a certain amount of water, g: 0.6 (0.6% by weight)

(0.06 wt.%) 0.02 g (0.02 wt.%

VPK-402 and O, 04 g (0.04 wt.%) PAA. The solution is thoroughly mixed, then topped up with water to 100 ml, mixed again and fed to a process for purifying water of a composition analogous to Example 1.

Example 4. To prepare, 100 ml of a solution of a quantity of water are successively dissolved.

metal chlorides: 0.8 (0.8 wt.%) Fed.,; 0.8 (0.8 wt.%) Aldj, 0.6 (0.6 wt.%) KC1; 0.18 (0.18 wt.%) Cadj; 0.12 (0.12 wt.%) NaCi; 0.10 (0.10 wt.%) FeCl ,, 0.08 (0.08 wt.%) 0.3 (0.3 m s.%) VPK-402 and 0.05 (0.05 wt. %) PAA. The solution is thoroughly mixed, water is added to 100 ml, mixed again, and fed to a process for purifying water of a composition similar to Example 1.

The research results are presented in the table.

In addition, the table presents the results confirming the possibility of using other cationic flocculants: a mixture of polyethylene-polyamine and polydimethyl carbinol (VPA), polyhexamethylene amino-diaminomethyl hydrochloride and polydimethyl carbinol (VIC):

t

-NH-CCHp -Jn lcH -CH-CHjL

HE

VPA

- (CHj) -NH-f-NH-CH-CH-CH J NH OH

VIC

As a mixture of metal chlorides, we tested melts of titanium-magnesium production chlorides in which the specified ratio of metal chlorides is provided.

Thus, from the results of the table it follows that the use of the proposed composition allows an average increase in the degree of purification by 10%, an increase in the rate of clarification of water by 20%, a decrease in the height of the sediment layer by an average of 20% and a significant decrease in

0

five

0

5 o

costs of expensive flocculant reagents.

Claims (1)

Invention Formula The composition for the treatment of wastewater from suspended solids, including polyacrylamide, cationic polyelectrolyte and metal chloride, is about one and the same. in order to increase the extent and speed of water purification from fine clay particles and reduce the height of the sediment layer, as the metal chloride it contains a mixture of iron (III) chlorides, iron (II), aluminum, potassium, sodium, calcium and magnesium in the following ratio, the research institute of components, wt.%: Polyacrylamide 0.03-0, 05 Cationic polyelectrolyte Ferric (III) chloride Ferric (II) chloride Aluminum chloride Potassium Chloride Sodium Chloride Calcium Chloride Magnesium Chloride Water 0.01-0.03 0.40-0.80 0.06-0.10 0.40-0.80 0.20-0.60 0.08-0.12 0.14-0.18 0 , 04-0.08 Else