UKTC Archive

Re: Biodisc effluent - impact to trees?

Subject: Re: Biodisc effluent - impact to trees?
From: Bill Anderson
Date: Dec 21 2017 12:08:54
I'd have thought that the liquid would be a problem even if it was just
water; wouldn't that lead to anaerobic conditions and root death?

Smells like plasticine? As a child I was convinced plasticine was made out
of sewage waste, largely on account of the odour when we went past the
treatment plant in the Lower Don Valley!

Bill.

On 21 December 2017 at 11:51, Jerry Ross <trees@xxxxxxxxxx.co.uk> wrote:

It strikes me that making an application of sewage sludge is one thing;
providing a supply of 1-2 cubic metres of nutrient rich liquid every day is
another. I'd be surprised if it didn't adversely affect established trees
down-slope. If nothing else, it would surely affect the mycorrhizae, would
it not?



On 21/12/2017 10:44, "Phillip Ellis" (elsteadbysea@xxxxxxxxxxx.com) wrote:

Many years ago we used sewage sludge at Aldershot entirely as topsoil to
landscaping of new army married quarters.
It was suggested the sludge dated back to the Boer war late 1800's, not
even I go back that far!
Everything grew and as far as I know still survives.


Phillip Ellis


-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info [mailto:uktc-request@xxxxxx.tre
e-care.info] On Behalf Of Edmund Hopkins
Sent: Thursday, December 21, 2017 10:30 AM
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: RE: Biodisc effluent - impact to trees?

Sewage sludge, which may or may not be the same thing, was widely used in
forestry so there should be some data hopefully on line at Forest Research.
I have used it as pit fill when employed as a young man and remember 2
things, the smell which was like plastercine, and the heat, which was
welcome in the bitterly cold.

Edmund Hopkins
Tree Officer
Heritage and Urban Design
City Planning
0115 XXXXXXX


-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info [mailto:uktc-request@xxxxxx.tre
e-care.info] On Behalf Of Igoea, Andrew
Sent: 21 December 2017 10:20
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: Biodisc effluent - impact to trees?

Hi All,

Has anyone had experience with assessing the impact of discharging
biodisc effluent (treated sewage) into the rooting zone of trees?

The treated effluent will contain 10mg/L suspended solids and 3.8mg/L
ammonia, and will have a BOD of 10mg/L. The output could be between 1-2
cubic metres per day.

The treatment facility is at the top of a steep bank and the trees are
below it.

I know the proposal will impact the moisture content and chemical
composition of the soil, which could impact the mycorrhizal associations
and soil fauna, but will it have a significant detrimental impact on the
trees?

Regards,

Andrew Igoea  | Arboricultural Officer
Forestry, Amenity and Lands Directorate | Department of Environment, Food
and Agriculture Thie Slieau Whallian | Foxdale Road | St Johns | Isle of
Man | IM4 3AS
TEL:  (+44) 01624 XXXXXX | MOB: (+44) 07624 XXXXXX | E-MAIL:
andrew.igoea@xxxx.im<mailto:andrew.igoea@xxxx.im>



Isle of Man. Giving you freedom to flourish


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