JPS5879509A - Composition for treatment of waste liquid and sludge - Google Patents

Abstract

PURPOSE:To permit easy solid-liquid sepn. of waste liquid and sludge by adding a compsn. for treatment consisting of slaked lime, etc. of specific weight ratios to said liquid and sludge and mixing and agitating the same. CONSTITUTION:A compsn. for treatment of waste liquid and sludge consists of 4.8-32.8wt% quicklime, 49.1-69.0wt% slaked lime, 3.6-4.9wt% lime silicate, 6.9-7.3wt% talc powder, 2.0-2.6wt% humic acid, and 3.3.-13.7wt% acid clay and these are mixed and agitated in gaseous nitrogen and while suppressing oxidation vulnerable to arise during mixing, the agitation is continued until the mixture has roughly uniform bulk density. Thus the surface electric charge of the molecules constituting waste liquid and sludge is changed to generate physical and chemical changes and reaction in the waste liquid and sludge and to generate the flocculation and volume shrinkage of the solids and the oxidation and clarification of water, whereby the solid-liquid sepn. is made easy.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a waste slurry treatment composition #CII which is added to industrial waste in the form of liquid slurry to harm the separation of monomorphic substances in the waste slurry from water quality.

Conventionally, waste liquid mud generated from sewage and manufacturing industries, etc., is mostly water, and the dry matter equivalent is (2) Carving C, that is,
Drg 8o11d) is the enemy quantity cage 1, and the crying sludge-
Approximately 0.4 to 0.6% of iron chloride and slaked lime are added to the solid content (C of the solid matter C of approximately 2%) of the physically concentrated clay slurry in one tank, and chemical coagulation is performed, and the supernatant water is removed.41 Waste liquid The mud is solid-liquid separated and the resulting dehydrated cake is incinerated or buried as is.
Alternatively, solid-liquid separation is performed after flocs are formed by using a polymer flocculant in combination with chestnut injection coagulation. In these methods.

The moisture content of the final remaining dehydrated cake is Isone 8s%, and this moisture content is due to the fact that the coexisting water has a somewhat colloidal quality, so the dehydration efficiency is not good. In addition, since the 1M water cake is in the form of flocs, it is bulky, so the volume of the JL hanger is large, and the flocs contain a lot of water, so even when incinerated, a lot of acidic fuel is consumed. It's being done. fLK Note a above - When incinerating a dehydrated cake with only sedimentation, corrosion of the stone incinerator cannot be observed due to the formation of chlorides.

In addition, human waste, livestock manure, and other organic waste liquid mud was sometimes sprayed on the farm fields, and due to the prohibition of this, the waste was disposed of by being thrown into the ocean.

This is also in the direction of banning sludge, and most of these areas are moving towards activated sludge treatment methods. However, in this method, the concentration of waste liquid sludge is unsuitably high (1111) compared to the activated sludge treatment method. Therefore, in general, it is difficult to decolorize and decolorize these gray liquid muds even if they are treated with activated sludge by diluting them with a large amount of water, especially when they contain fats and oils like poultry waste WL mud. The ability of activated sludge treatment methods, such as aerobic gardening, is severely inhibited.The dewatered cake that remains after treating the waste liquid sludge described above is quite unpleasant, but its fertilizing ingredients are not absorbed by other dewatered cakes. It was planned to use it as an organic supplementary fertilizer because the amount of phosphorus in the soil is higher than that in the soil. The current situation is that sludge is disposed of in a landfill in the same way as sludge. Moreover, by mixing and stirring, the surface charge of the molecules constituting the waste liquid slurry is changed, and accordingly, a physical change and a chemical reaction are caused in the waste liquid slurry.

This causes agglomeration and ejection of solids and oxidation and clarification of the water quality, thereby increasing the solid-liquid separation to a volume of J6, converting it to a dehydrated cake with a low water content, and at the same time significantly lowering the rijsat of the water quality. *An object of the present invention is to provide a composition for treating liquid parts.

The composition for granite mud%ffi of the present invention comprises quicklime 4J to 32
．． 8% by weight, slaked lime 49.1-694% coulometric, silicate lime 3.6-49% by weight, talcum powder 6.9-7.31% by weight
.

Rot 11.0-2β direct weight% and acidic china clay 1B -13,7
% by weight, these are mixed and stirred in a phoneme air stream, and a
While suppressing oxidation that may occur during mixing, stirring is continued until the bulk of the mixture becomes almost uniform, resulting in a powdery granular material.

The above waste liquid mud 0 For example, after leaving it still and removing excess water
While stirring the sewage waste liquid mud with a water content of 98% (2% as Drg 8olid), the composition for treating the jJ liquid part of the present invention was added to (2) carvings #/c in the waste liquid mud by S to 10%. When mixed and stirred, the liquid content of the waste liquid mud changed to acidity 11 due to the relatively wide range of clay.

# Mine liquid mud does not change immediately outside.

As the stirring continues, the solid matter sludges, and the swollen solid material swells.
Km fine m-solid (8uspenslon 8o11
d) is sorbed and exhibits agglomeration-like behavior. At this point, if the stirring is stopped and the mixture is allowed to stand still, after some time (3 to S minutes), the swollen aggregates separate into deceptive grain boundaries as if collapsing. , f! LK generates small air bubbles while producing absorption IIm,
This aggregate sediments relatively quickly. At first, this settled solid material was waving in the boundary line with the mother liquor, but for 1 to 2 minutes, the reduction of the KtK sedimentation volume became noticeable, and the appearance was clearly drawn. t1# exhibits a clump-like state. At this point, the supernatant water becomes completely transparent, its coloring almost disappears, and the unpleasantness characteristic of sewage waste liquid il@ completely disappears. In addition, this supernatant water is JIS K 0102
Based on the 11 industrial wastewater test method @ (analyzed ants,
Approximately 70% BOD & 90% ON-hexane extract amounts were removed compared to the bulk, respectively.

After removing the settled solids with supernatant water,
As a result of Nogata's (2) liquid fraction III& using a glass funnel with a 100 mm diameter, the filtration rate was rapid and recommended, and the continuous filtration rate was 4 times the Pak rate. Also, P@,
The moisture content of the upper dehydration cake was 80% at 5 hours vk i, and the appearance of this dehydration cake was moist and finely sandy. Also, as a result of looking at this dehydrated cake with a 200x scanning electronic mirror, it was about 80? Cron's almost spherical object @1
891, and the mass of these lumps was 400 to 1,300 square meters.

The physical changes and chemical reactions of the present invention's Onight WL mud composition against liquid mud during treatment were determined by magnetic potential difference analysis, gas C1 magnetic flux and quantitative X-ray analysis. It is estimated that the test result is boC.

The liquid part 11 & ring composition is a multi-component compound made by combining natural processed products such as slaked lime (4), and these crystals are partially semi-composite. it is conceivable that. Therefore, when the coating composition is administered into water, relatively water Kmtt
The crystals constituting the 16 acidic clay first decompose into #l, and as a result, the liquid properties of the waste liquid part are rapidly transferred to the arm, and as a result, the surface charge state of the substances constituting the waste liquid part changes.

Coupled with the cohesive effect of the common behavior of calcium-based natural products that coexist, the solid particles in the magic liquid part form a mutual @ collection. At this point, the aggregates are saturated with water and are thought to disintegrate when the mass of these aggregates exceeds the visual field.

It is assumed that this is because a molecular divisor is generated inside the aggregate, which collapses the a aggregate, and the aggregate, which has been subdivided into wheat, is subsequently contracted. Fulvic acid is a natural substance made of acids.

If the substance to be administered is acidic, it exerts oxidizing power, and if it is alkaline, it decomposes amines, ammonia, and hydrogen sulfide, so it has great persuasive power. What is the substance of eggplant?

Although it is not yet known theoretically, from the early stage when the composition comes into contact with the waste liquid, the sulfuric acid diffuses into the humic liquid mud, converts it into a, and improves the oxygen fs# value. At the same time,
Magnesium silicate, which constitutes talcum powder, acts as an electrolyte substance. As a result, the colloidal - of the +11 liquid mud was clarified and the solid-liquid separation effect was noticeably enhanced, which is presumably why the water content of the dehydrated cake decreased.

No. 11 solid-liquid mud escape machine using the waste liquid/sludge treatment composition of the present invention is non-electrically simple, that is, a Bokusho-shaped reaction tank conventionally used as a wastewater purification treatment equipment.

Thickener and 1-liquid separation are only stones. However, at 0 rotation speed t, the stirrer stirs up and down, left and right, and diagonally at the same time.
When placed in a cylindrical stirrer of 70-8 OR/M, the objective is achieved to 6. or.

Although the dehydrated cake has been efficiently dehydrated, it is estimated that it still contains about 75% water.

In this situation, there may be some restrictions in the final disposition, but the patent publication publication! S6-216801m High-speed dehydration and processing method for Qin waste The product that is dehydrated and dried in a short time without applying external heat using this equipment has the advantage of being reusable as a soil improvement material. This is.

This is because the mosquito composition does not contain an organic polymer flocculant C (mainly composed of polyacrylic foam) that inhibits the action of phosphorus in the soil, so destruction of the soil can be avoided.

Examples using the composition for treating the waste liquid part of the present invention will be explained below. Example 1 +1> Object to be treated - Sewage sludge collected from the sludge aliI tank.

Its linear properties are as follows.

(2) Treatment method: Put the above sludge into a treatment tank equipped with an agitator, and while driving the agitator at a speed of 7fiL/M, add the waste liquid sludge q & ditch composition to 2% of the solids in the sludge, and add S% phase amount to 2% solids in the sludge. was administered into a powdered granular tank.

After continuing stirring for wLKS minutes, stirring was stopped.

Solid-liquid separation was immediately carried out using an empty filter without sedimentation.

(3) @San M power Example 2 +11 Processing target: Industrial chemical manufacturing waste liquid discharged, its slope properties are as follows.

(2) Treatment method The treatment was performed in exactly the same manner as in Example 1 except for the amount of the composition treated in the soul fluid section.

Example 3 (11) The resulting edge after removing coarse gore (@fatty, pulp lumps, etc.) to be treated, and its general properties are as follows.

(2) Treatment method The same g&ring procedure as in Example 1 was carried out.

However, the processing tank is a processing tank that can be sealed with - in order to prevent spoilage, and the stirrer is a stirrer with a short cylinder attached to the tip of the stirring shaft and a three-blade machine installed in the cylinder g over 2JQK.

(3) Place fence ant Back 111@4 +l) Object to be treated The general properties of the IRs waste liquid slurry are as follows.

(2) Treatment method A viscous oily substance floating above the object in the storage tank (
#hSaponified vegetable oil) is removed using a blowfish, and the dirt containing contaminated water and food residue is removed.
The material was crushed into a uniform paste by 1 m, and then
The treatment was carried out in the same manner as for ll.

(3) Implementation of treatment results (1) Processing target: Cow manure (including water for rinsing the pot); (2) Treatment method; A ring was formed in the same manner as in Example 1.

(3) Terminal folds 11m example 6 +11 Processing vs. M-fun The mechanical properties of the liquid part of the soil are as follows.

(2) Disposal method The treatment was performed in the same manner as in Example 1.

(3) Treatment Heat Result Example 7 (11 Treatment H1 target bentonite waste liquid section, the properties of the can are as follows.

(2) ’4511 Law The bottle was given in the same manner as in Example 1.

(3) Treatment results The present invention can easily and economically purify waste liquids such as sewage mud, human waste, and food sludge, which are currently generating a huge amount of environmental and social problems. 2? Without being able to become X public #-.

It can also be used to improve ambiguous soil damage that can be re-shrined as needed, and is extremely effective in preventing JR environmental pollution.

Procedural amendment (spontaneous) December 8, 1980 Director General of the Japan Patent Office Shima 1) Haruki - Indication of the case 1988 Patent Order No. 177148a Name of the invention Hirumon Corpse Genus i Fan i Seki la Make amendments Relationship with the patent case Address of the patent applicant: Mr. 4, 2630, 4mon Dodamon Takashijunbue
Name --- Todoroki Haka 1 person 4 generations Place Person a Target of amendment Contents of amendment in Column 6 of Detailed explanation of the invention in the specification As shown in the appendix, L specification, second line from the bottom of page 1 and bottom of page 4 Correct rD r gJ in the third line from [DryJ].

Claims (1)

[Claims] By adding to the waste liquid mud and mixing and stirring, the solids in the waste liquid mud can be removed. It is a composition that produces harmful lyotropic components by causing volumetric contraction, oxidation and clarification of water quality, and contains quicklime 4.8-32 Jl mass%, slaked lime 49.1-6
9.0% by weight, lime silicate 3L-489% by weight, talc 8
6.9 to 1.3% by weight of humus dR, 10 to 161% by weight of humus dR, and 3J to 13.7% of acidic china clay.