DE1584867C - Process for the production of an additive or filter aid for the purification of waste water - Google Patents

Description

3 4

Purification reactor filled with molded bodies with lower pump 21, according to FIG. 2 by hydrostatic rer wastewater supply and upper pure water pressure promoted. In the bottom 12 of the shaft conveyor drain, one of the cleaning reactor 3 downstream of the cleaning reactor is located switched on settling chamber with discharge device, scraper discharge device 13, for example for the sewage sludge / filter aid mixture, a 5 scraper wheel or a scraper slider that works with your The press downstream of the discharge device for movement, scraping out the mixture to be discharged Dewatering and production of the moldings and sewage sludge and filter aids from the filter bed Feeding device to promote the carries. Molded bodies are located under the scratch discharge device 13 A settling chamber 15 extends from the press via a coking furnace to the cleaning reactor. The flow through the io mer 15 is with a discharge device 16 or 17 Purification reactor in countercurrent to the settling pre-equipped, which in F i g. 1 as a discharge screw outlet is achieved in a particularly advantageous manner. The embodiment according to FIG. 2 work by that the cleaning reactor is shaft-shaped with discharge flasks that share a common conveyor work as an overflow running pure water drain from the belt 18. The discharge pistons are in formed, the sewage inlet as a pressure line in the ao direction of arrow 19 and moved back and forth and ge settling chamber introduced and, as it were, the deposited portion between cleaning benches reactor and settling chamber a scraper discharge pre-sewage sludge filter aid mixture 14 free. the The direction for the sewage sludge filter aid settling chamber is in both cases from a collecting tank is arranged; The pressure for the introduction of melbecken 20 for the wastewater 2 is charged. at of the raw wastewater can be pumped or shown in FIG. 15. 1, the collecting basin 20 is a separate Bekbesonders simply by the hydrostatic ken, from which the pump 21, the wastewater 2 in the Pressure of a collecting basin for the wastewater- cleaning reactor 3 presses. At F i g. 2 surrounds be generated that preferably the shaft-shaped the collecting basin 20 jacket-like the shaft-shaped cleaning reactor encloses like a jacket. More gene cleaning reactor 3, the water levels in Advantageous features of the invention result in 25 collecting basins 20 and in the pure water drain 5 so geaus the dependent claims 6 and 7 are selected that the for the promotion of the Ab-

Embodiments of the invention are in fol- wassers 2 required by the device hydro-

Explained in more detail with reference to the drawings. static pressure adjusts.

These show in a schematic representation and in part, the manner is not shown in the drawings in section two embodiments of the pre-configuration of the downstream press 9 in detail; direction to carry out the procedure. z. B. one can use continuous roller presses

The device according to FIG. 1 owns a work with. In general, the sewage sludge is given moldings 1 filled cleaning reactor 3 with un- filter aid mixture 14 sufficiently ceramic terer waste water supply 4 and upper pure water raw materials to produce the molded body 1. Counter flow 5, as well as with the upper feed 6 for the fiI- 35, however, ceramic auxiliaries can also be used in front of the press 9 if necessary and lower discharge 7 of the clean material can be added. The squeezed Sludge filter aid water produced in the reactor is fed back to the wastewater 2. Also medium mixture 14. Furthermore, an air supply of the coking furnace 10 is in its design be provided, which in principle arbitrarily in the embodiment according to, and there can be known F i g. 1 has a pump 8. 40 smoldering furnaces can be used. For economic

According to the invention, the discharge 7 is recommended for the foundation of the coking furnace 10

Sewage sludge filter aid mixture to equip a press 9 with additional burners, which with the

downstream for the production of moldings. Carbonization gas can be heated, whereby even the possibility

The press 9 in turn is a coking furnace 10 speed, the coking furnace 10 exclusively

downstream for firing the moldings. The 45 can be heated with carbonization gas.

The output of the coking furnace 10 is connected to the cleaning unit. It can be seen from the diagram of the illustrated

supply reactor 3 connected, so that this constantly devices directly that one the wastewater

is charged with the shaped bodies 1 and these in feed 4, the feed 6 for the filter aid

the cleaning reactor 3 a filling in the manner of a and the discharge 7 of the contained in the cleaning reactor 3

Form filter bed. This is from the sewage 50 standing sewage sludge / filter aid mixture 14

flows through from bottom to top, with the carbon through appropriate design and layout of the

substance-containing molded body from the coked sewage-associated aggregates, such as the

sludge-filter aid mixture a strong catalytic drive speed for the scraper discharge

have a sator and filter effect. direction 13, the discharge devices 16, 17, the

The cleaning reactor 3 is in the execution 55 conveyor belt 18 and the power of the pump 21 without

form both according to FIG. 1 as well as according to FIG. 2 Adapt difficulties to special circumstances

Well-shaped with clean can designed as an overflow, especially the hydraulic

water drainage 5 designed. The raw wastewater 2 pollution and the degree of pollution of the wastewater

is according to FIG. 1 by the pump pressure of a sers.

1 sheet of drawings

Claims (7)

1 2 Sewage sludge, which is obtained from the wastewater according to additional patent claims: the agent by settling and then mechanically dewatered. The invention 1. Process for the production of a · - additional- according to the main patent application is the task or filter aid for cleaning wastewater 5 based on the process to carry out so that the water by coking a sewage sludge, the coking product in addition to its effect as a filter the wastewater after its merging aid for sludge dewatering a related With the filter aid, it has an improved effect on wastewater purification by settling it and then mechanically dewatered / This "task is done according to the main patent, whereby the sewage sludge with the each message is solved in that the sewage sludge with Occasional drainage still remaining, arteid still remaining in the respective drainage Moisture content at temperatures of above, species-specific moisture content at temperatures above 600 C is coked, according to patent application doors are coked at over 600 ° C. Here is pre-P 14 59,457.1-25, Väädürchgeke! Nnzeich- see, the merging of the wastewater with net that the sewage sludge with the mechanical 15 the filter aid in a reaction basin before drainage Shaped into 'shaped bodies' which increase after a settling basin is connected. Moldings are then coked »and die-yer- The sewage sludge resulting from the dewatering coke shaped body. Constantly to renew one is in its arising during the drainage coked from the wastewater in the Öegenstrom to the settling pre-form. passage through a reactor bed used 20 The present invention relates to an improvement ■ become. tion and further development of the procedure 2. The method according to claim 1, characterized in the main patent application. Your task is to identify that the sewage sludge in front of the ma- gründe, the drained sewage sludge auxiliary filter clamps Drainage ceramic material mixed with one for its subsequent Verkozugesetzt will. 25 recycling and reuse are particularly advantageous 3. Device for carrying out the process to give form and nature and in the case of the rens according to claim 1 or 2, characterized reuse the merging of the waste through a cleaning reactor (3) filled with the coked molded bodies water with the coking product and with a lower waste water Ren that the cleaning effect of (5), a coking product below the cleaning reactor (3), which is improved by the process after the main fiber feed (4) and the upper pure water drain 30 tentanmeldung, is fully utilized. '■ *
switched settling chamber (15) with Austragsvor- Starting from a method for manufacturing direction (16, 17) for. das .. Sewage sludge filter an additional or filter aid for cleaning auxiliary mixture, 'one' of the discharge device of wastewater by coking a sewage sludge, (16,17) downstream press (9) for dewatering 35 of the wastewater after it is brought together and production of the shaped bodies and a treatment with the filter aid by settling the ge-charging device for conveying the recovered and then mechanically dewatered shaped bodies from the press (9) via a processing, whereby the sewage sludge with the at the respective coking furnace (10) to the cleaning reactor ( 3). ! igen drainage still remaining, species-specific 4. Apparatus according to claim 3, characterized in that the moisture content is 40. Temperatures of over indicates that the cleaning reactor (3) is coked at 600 ° C, the solution to this problem Well-shaped with designed as an overflow according to the invention, characterized in that Pure water drain (5) is formed, the sewage the sewage sludge in the mechanical dewatering water supply (4) formed as a pressure line in the settling into shaped bodies, the shaped body connecting chamber (15) introduced and coked between cleaning 45 ßend and the. coked moldings constantly Generation reactor (3) and settling chamber (15) one for renewing one of the wastewater in countercurrent Scraper discharge device (13) for the clarification to settling process through which the reactor bed flows sludge filter aid mixture is provided. be used. 5. Device Jiach claim 3 or 4, -da- This has the advantage that on the one hand characterized in that for the raw water a 50 the molded body formed during the coking Collection basin (20) is provided, which is the particularly large adsorptive and catalytic clean shaft-shaped Purification reactor (3) have casing effect and that on the other hand through -.tig encloses. :. ....__.— - .. the formation of a solid through which the sewage flows 6. Device according to one of claims 3, a reactor bed. particularly intimate contact of the to 5, characterized ^ ^; that the subsequent waste water with the additive and thus a connected press (9) is achieved as a continuous roller special intensive cleaning effect, press is executed and the expelled water. This leads to the further advantage that the process is fed back to the raw water . ren in a system of particularly closed and 7. Device according to one of claims 3 space-saving design and with a very einfabis 6, characterized in that in the cooking 60, functionally reliable and fully continuous Arkungsofen (10) can be carried out with the resulting carbonization gas by stages. As a result of that heatable additional burners are arranged. the sewage sludge before mechanical dewatering ceramic material adds, the Forming the sewage sludge into molded bodies 65 easier. The main patent application relates to a method that is particularly closed and space-saving for the production of an additive or filter aid device for carrying out the process according to the invention Purification of wastewater by coking a process consists of one with the coked