Published by Abdullah ALYAHYAI
What is your experience of sludge treatment and disposal in European and other countries?
We produce potable water through desalination and during remineralization produce Lime sludge which is predominantkly calcium carbonate.Is there any scope for recycling this sludge
Published by Soloman Prince, Plant General Manager at F2 IWPP PLANT FUJAIRAH UAE
It depends on the sludge characteristics. Treatment may have to be given for the sludge which is difficult to dewater. Primary & Secondary sludge are to be thickned in the Thickner and then dewatered by various methods available.
If sludge has biodegradable organic matter then anaerobic treatment can generate the biogas.
Sludge can also be considered for recovery. For example sludge from Pulp and paper mill is used as raw material in Board Mills.
Rajendrakumar V Saraf, FIE, FIWWA
Chairman
Viraj Envirozing India Pvt. Ltd
21, Radhakrishna, Near SBI, Paud Road
Pune 41038
Tel 02015433445, 9822186763
Published by Rajendrakumar Saraf
Abdullah ALYAHYAI ,
In my particular view, the first approach, if you already have a sewage treatment system in operation, is to consider what can be extract from the sludge, before disposal. For example, energy and nutrients can be recovered from sludge, in many different ways, according to your operational needs and conditions, legal demands and financial capacity. By doing so, waste disposal, environmental liabilities and the emission of greenhouse gases can be minimized, or even transformed into some product that can reduces your operating costs or generates revenue for your operation.
Simple solutions such as anaerobic digester can meet de demands of a small-scale cases, recovering energy in the form of biogas and reducing the volume of sludge being discharged. On another side of the complexity scale, I recommend visiting the DC Water website (https://www.dcwater.com/biosolids) and viewing its biosolids management program. Between this two ways, a lot of different solutions and technologies (dewatering, drying, composting, etc.) can be applied, but it is totally necessary to know better the specific technical and financing situation to recommend you the best concept.
Published by Joelcio Saturnino, Environmental Business – Marketing & Sales
The most environmentally friendly and hygienic technology is
bioengineering technology for the high-speed processing of dehydrated sludge into solid fuel, compost or fertilizer (depending on contamination). Without emissions, odors and wastewater. Specific recommendations or consultations for specific conditions - services are paid.
Published by Vitalijus Gediminas
We are a producer of sludge dryers. According with our experience we can say that in the norther part of Italy the WWTP disidrate the sludge and send them to composting process and after to fields (cost 100 €/ton). The compost company prefer a dry sludge with 70% of DM. In the south of Italy the WWTP send the sludge to landfill. in Austria and Germany often the sludge is burned. If you want more information contact me at paolo@solwa.it
Published by paolo franceschetti
Наша технология перерабатывает ил и любые фекальные стоки в озерную воду и самое лучшее и безопасное удобрение!
Published by Андрей Лапочкин, Директор at Чистый сток
The biosolids can be an excellent fuel in a down draft gasification system. Not only are they disposed of in an environmentally responsible manner but they can produce a clean gas for electricity or even clean water. Neal@newrangepower.com
Published by Neal Van Milligen, New Range Power Corp - Manager
WE THINK THAT THE BEST WAY FOR SLUDGE TREATMENT AND DISPOSAL IS SOLAR DRYING AND INCINERATION AT SITE. BY DOING THIS THE LAND REQUIRED FOR THE SOLAR DRYING SYSTEM WILL BE SMALLER AND THE OURCOME AS ASH WILL BE A VALUABLE MATERIAL.
DRIED SLUDGE MAY BE SENT TO CEMENT FACTORIES
Published by Işıtman Ahmet, ARGES ARITMA MAKİNA LTD - General Manager